#ifndef _COMBO_DEFINITE_OBJECT_H
#define _COMBO_DEFINITE_OBJECT_H

namespace combo {

  typedef std::string definite_object;

  typedef std::set<definite_object> definite_object_set;
  typedef definite_object_set::iterator definite_object_set_it;
  typedef definite_object_set::const_iterator definie_object_set_const_it;

}

#endif
